The film's explosive premise kicks in when Jay is assigned to hunt down and kill Ranjit. However, a dark secret emerges: Ranjit is Jay’s biological father. Jay is the "naajayaz" (illegitimate) son born out of Ranjit's illicit relationship with a classical singer, played by .

Today, film critics often cite Naajayaz as Ajay Devgn’s first truly "mature" role. The film is frequently referenced in listicles about "Bollywood films that deserve a sequel" or "Most underrated cop dramas."

The standout track, (sung by Kumar Sanu and Alka Yagnik), is arguably one of the most beautiful ghazal-inspired duets of the 90s. Unlike the bouncy party songs of that era, this song carries a sense of impending doom and eternal separation.